#!/usr/bin/env bash
set -euo pipefail

# Works around a Vale limitation: the `text.frontmatter.description` NLP scope
# silently stops matching once the `description:` value is a YAML block scalar
# (`>`/`|`) spanning 2+ physical lines — the style used by most skills/agents in
# this repo. Flattens the description to one physical line in a scratch copy
# (padding with blank lines so every other line number is unchanged), then runs
# the real `vale` binary against the copies. Drop-in replacement for calling
# `vale` directly: same args, same exit code.

repo_root="$(git rev-parse --show-toplevel 2>/dev/null || pwd)"

vale_args=()
files=()
config_next=false
for arg in "$@"; do
  if [[ "$config_next" == true ]]; then
    if [[ "$arg" == /* ]]; then
      vale_args+=("$arg")
    else
      vale_args+=("$repo_root/$arg")
    fi
    config_next=false
    continue
  fi
  if [[ "$arg" == "--config" ]]; then
    vale_args+=("$arg")
    config_next=true
    continue
  fi
  if [[ "$arg" != -* && -f "$repo_root/$arg" ]]; then
    files+=("$arg")
  else
    vale_args+=("$arg")
  fi
done

if [[ ${#files[@]} -eq 0 ]]; then
  exec vale "${vale_args[@]}"
fi

tmpdir="$(mktemp -d)"
trap 'rm -rf "$tmpdir"' EXIT

for rel in "${files[@]}"; do
  dest="$tmpdir/$rel"
  mkdir -p "$(dirname "$dest")"
  python3 - "$repo_root/$rel" "$dest" <<'PYTHON'
import json
import re
import sys

src, dest = sys.argv[1], sys.argv[2]
with open(src) as fh:
    content = fh.read()

fm_match = re.match(r'^(---\n)(.*?\n)(---\n)', content, re.DOTALL)
if fm_match:
    fm = fm_match.group(2)
    desc_m = re.search(r'^description:\s*([>|][+-]?)\n((?:[ \t]+.+\n?)+)', fm, re.MULTILINE)
    if desc_m and desc_m.group(2).count('\n') >= 2:
        raw = desc_m.group(2)
        flat = re.sub(r'\s+', ' ', raw).strip()
        # JSON string escaping is a valid subset of YAML double-quoted scalar
        # escaping, so this is always a well-formed YAML value regardless of
        # colons, quotes, or backslashes in the description text.
        flat_q = json.dumps(flat)
        pad = '\n' * raw.count('\n')
        new_fm = fm[:desc_m.start()] + f'description: {flat_q}\n{pad}' + fm[desc_m.end():]
        content = fm_match.group(1) + new_fm + fm_match.group(3) + content[fm_match.end():]

with open(dest, 'w') as fh:
    fh.write(content)
PYTHON
done

cd "$tmpdir"
vale "${vale_args[@]}" "${files[@]}"